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Northern Ireland farm-level management factors for prolonged bovine tuberculosis herd breakdowns
This study determined farm management factors associated with long-duration bovine tuberculosis (bTB) breakdowns disclosed in the period 23 May 2016 to 21 May 2018; a study area not previously subject to investigation in Northern Ireland. A farm-level epidemiological investigation (n = 2935) was com...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Cambridge University Press
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7584010/ https://www.ncbi.nlm.nih.gov/pubmed/32981557 http://dx.doi.org/10.1017/S0950268820002241 |
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author | Doyle, L. P. Courcier, E. A. Gordon, A. W. O'Hagan, M. J. H. Johnston, P. McAleese, E. Buchanan, J. R. Stegeman, J. A. Menzies, F. D. |
author_facet | Doyle, L. P. Courcier, E. A. Gordon, A. W. O'Hagan, M. J. H. Johnston, P. McAleese, E. Buchanan, J. R. Stegeman, J. A. Menzies, F. D. |
author_sort | Doyle, L. P. |
collection | PubMed |
description | This study determined farm management factors associated with long-duration bovine tuberculosis (bTB) breakdowns disclosed in the period 23 May 2016 to 21 May 2018; a study area not previously subject to investigation in Northern Ireland. A farm-level epidemiological investigation (n = 2935) was completed when one or more Single Intradermal Comparative Cervical Test (SICCT) reactors or when one or more confirmed (positive histological and/or bacteriological result) lesion at routine slaughter were disclosed. A case-control study design was used to construct an explanatory set of management factors associated with long-duration bTB herd breakdowns; with a case (n = 191) defined as an investigation into a breakdown of 365 days or longer. Purchase of infected animal(s) had the strongest association as the most likely source of infection for long-duration bTB herd breakdowns followed by badgers and then cattle-to-cattle contiguous herd spread. However, 73.5% (95% CI 61.1–85.9%) of the herd type contributing to the purchase of infection source were defined as beef fattening herds. This result demonstrates two subpopulations of prolonged bTB breakdowns, the first being beef fattening herds with main source continuous purchase of infected animals and a second group of primary production herds (dairy, beef cows and mixed) with risk from multiple sources. |
format | Online Article Text |
id | pubmed-7584010 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Cambridge University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-75840102020-11-03 Northern Ireland farm-level management factors for prolonged bovine tuberculosis herd breakdowns Doyle, L. P. Courcier, E. A. Gordon, A. W. O'Hagan, M. J. H. Johnston, P. McAleese, E. Buchanan, J. R. Stegeman, J. A. Menzies, F. D. Epidemiol Infect Original Paper This study determined farm management factors associated with long-duration bovine tuberculosis (bTB) breakdowns disclosed in the period 23 May 2016 to 21 May 2018; a study area not previously subject to investigation in Northern Ireland. A farm-level epidemiological investigation (n = 2935) was completed when one or more Single Intradermal Comparative Cervical Test (SICCT) reactors or when one or more confirmed (positive histological and/or bacteriological result) lesion at routine slaughter were disclosed. A case-control study design was used to construct an explanatory set of management factors associated with long-duration bTB herd breakdowns; with a case (n = 191) defined as an investigation into a breakdown of 365 days or longer. Purchase of infected animal(s) had the strongest association as the most likely source of infection for long-duration bTB herd breakdowns followed by badgers and then cattle-to-cattle contiguous herd spread. However, 73.5% (95% CI 61.1–85.9%) of the herd type contributing to the purchase of infection source were defined as beef fattening herds. This result demonstrates two subpopulations of prolonged bTB breakdowns, the first being beef fattening herds with main source continuous purchase of infected animals and a second group of primary production herds (dairy, beef cows and mixed) with risk from multiple sources. Cambridge University Press 2020-09-28 /pmc/articles/PMC7584010/ /pubmed/32981557 http://dx.doi.org/10.1017/S0950268820002241 Text en © The Author(s) 2020 http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Paper Doyle, L. P. Courcier, E. A. Gordon, A. W. O'Hagan, M. J. H. Johnston, P. McAleese, E. Buchanan, J. R. Stegeman, J. A. Menzies, F. D. Northern Ireland farm-level management factors for prolonged bovine tuberculosis herd breakdowns |
title | Northern Ireland farm-level management factors for prolonged bovine tuberculosis herd breakdowns |
title_full | Northern Ireland farm-level management factors for prolonged bovine tuberculosis herd breakdowns |
title_fullStr | Northern Ireland farm-level management factors for prolonged bovine tuberculosis herd breakdowns |
title_full_unstemmed | Northern Ireland farm-level management factors for prolonged bovine tuberculosis herd breakdowns |
title_short | Northern Ireland farm-level management factors for prolonged bovine tuberculosis herd breakdowns |
title_sort | northern ireland farm-level management factors for prolonged bovine tuberculosis herd breakdowns |
topic | Original Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7584010/ https://www.ncbi.nlm.nih.gov/pubmed/32981557 http://dx.doi.org/10.1017/S0950268820002241 |
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